#app {
    width: 70%;
    margin: auto;
    padding: 10px;
    text-align: center;
}

.el-dialog {
    padding: 0 20px;
}

.add-btn {
    width: 100%;
    height: 40px;
    display: flex;

    /* 弹性容器在主轴上的对齐方式, space-between: 间距在弹性盒子之间, 且间距都相等! */
    justify-content: space-between;
    display: -webkit-flex; /* Safari */
}


.new-add {
    height: 40px;
}